jQuery.extend( {
			createUploadIframe : function(id, uri) {
				var frameId = 'jUploadFrame' + id;
				if (window.ActiveXObject) {
					var io = document.createElement('<iframe id="' + frameId
							+ '" name="' + frameId + '" />');
					if (typeof uri == 'boolean') {
						io.src = 'javascript:false';
					} else if (typeof uri == 'string') {
						io.src = uri;
					}
				} else {
					var io = document.createElement('iframe');
					io.id = frameId;
					io.name = frameId;
				}
				io.style.position = 'absolute';
				io.style.top = '-1000px';
				io.style.left = '-1000px';
				document.body.appendChild(io);
				return io
			},
			createUploadForm : function(id, fileElementId) {
				var formId = 'jUploadForm' + id;
				var fileId = 'jUploadFile' + id;
				var form = $('<form  action="" method="POST" name="' + formId
						+ '" id="' + formId
						+ '" enctype="multipart/form-data"></form>');
				var oldElement = $('#' + fileElementId);
				var newElement = $(oldElement).clone();
				$(oldElement).attr('id', fileId);
				$(oldElement).before(newElement);
				$(oldElement).appendTo(form);
				$(form).css('position', 'absolute');
				$(form).css('top', '-1200px');
				$(form).css('left', '-1200px');
				$(form).appendTo('body');
				return form;
			},
			ajaxFileUpload : function(s) {
				s = jQuery.extend( {}, jQuery.ajaxSettings, s);
				var id = new Date().getTime()
				var form = jQuery.createUploadForm(id, s.fileElementId);
				var io = jQuery.createUploadIframe(id, s.secureuri);
				var frameId = 'jUploadFrame' + id;
				var formId = 'jUploadForm' + id;
				if (s.global && !jQuery.active++) {
					jQuery.event.trigger("ajaxStart");
				}
				var requestDone = false;
				var xml = {}
				if (s.global)
					jQuery.event.trigger("ajaxSend", [ xml, s ]);
				var uploadCallback = function(isTimeout) {
					var io = document.getElementById(frameId);
					try {
						if (io.contentWindow) {
							xml.responseText = io.contentWindow.document.body ? io.contentWindow.document.body.innerHTML
									: null;
							xml.responseXML = io.contentWindow.document.XMLDocument ? io.contentWindow.document.XMLDocument
									: io.contentWindow.document;

						} else if (io.contentDocument) {
							xml.responseText = io.contentDocument.document.body ? io.contentDocument.document.body.innerHTML
									: null;
							xml.responseXML = io.contentDocument.document.XMLDocument ? io.contentDocument.document.XMLDocument
									: io.contentDocument.document;
						}
					} catch (e) {
						jQuery.handleError(s, xml, null, e);
					}
					if (xml || isTimeout == "timeout") {
						requestDone = true;
						var status;
						try {
							status = isTimeout != "timeout" ? "success"
									: "error";
							if (status != "error") {
								var data = jQuery.uploadHttpData(xml,
										s.dataType);
								if (s.success)
									s.success(data, status);
								if (s.global)
									jQuery.event.trigger("ajaxSuccess", [ xml,
											s ]);
							} else
								jQuery.handleError(s, xml, status);
						} catch (e) {
							status = "error";
							jQuery.handleError(s, xml, status, e);
						}

						if (s.global)
							jQuery.event.trigger("ajaxComplete", [ xml, s ]);

						if (s.global && !--jQuery.active)
							jQuery.event.trigger("ajaxStop");

						if (s.complete)
							s.complete(xml, status);
						jQuery(io).unbind()
						setTimeout( function() {
							try {
								$(io).remove();
								$(form).remove();

							} catch (e) {
								jQuery.handleError(s, xml, null, e);
							}

						}, 100)

						xml = null

					}
				}
				if (s.timeout > 0) {
					setTimeout( function() {
						if (!requestDone)
							uploadCallback("timeout");
					}, s.timeout);
				}
				try {
					var form = $('#' + formId);
					$(form).attr('action', s.url);
					$(form).attr('method', 'POST');
					$(form).attr('target', frameId);
					if (form.encoding) {
						form.encoding = 'multipart/form-data';
					} else {
						form.enctype = 'multipart/form-data';
					}
					$(form).submit();

				} catch (e) {
					jQuery.handleError(s, xml, null, e);
				}
				if (window.attachEvent) {
					document.getElementById(frameId).attachEvent('onload',
							uploadCallback);
				} else {
					document.getElementById(frameId).addEventListener('load',
							uploadCallback, false);
				}
				return {
					abort : function() {
					}
				};

			},

			uploadHttpData : function(r, type) {
				var data = !type;
				data = type == "xml" || data ? r.responseXML : r.responseText;
				if (type == "script")
					jQuery.globalEval(data);
				if (type == "json")
					eval("data = " + data);
				if (type == "html")
					jQuery("<div>").html(data).evalScripts();
				return data;
			}
		})
